caa a22 4500 378916807 CHVBK 20180305123555.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.2298/hel0441113m doi (NATIONALLICENCE)gruyter-10.2298/hel0441113m SELECTION OF CONSISTENT PLANT TRAITS FOR SUNFLOWER GROWTH USING PRINCIPAL COMPONENT ANALYSIS [Elektronische Daten] SELECCIÓN DE LAS CARACTERÍSTICAS CONSISTENTES DEL CRECIMIENTO DE GIRASOL, UTILIZANDO EL ANÁLISIS DE LAS COMPONENTES PRINCIPALES / SÉLECTION DE CARACTÉRISTIQUES CONSTANTES DANS LA CROISSANCE DU TOURNESOL PAR L'ANALYSE DES COMPOSANTS PRINCIPAUX / [G.R.Maruthi Sankar, M. Vanaja, V. Maruthi, P. Raghuram Reddy, D. Narasimha Murthy] Principal component analysis has been explored for assessing the consistency of 14 plant traits for sunflower growth using multivariate data of 6 field experiments conducted during kharif 1994 to 1999 seasons on rainfed alfisol. Seven genotypes have been used in the study viz., Guj-sun-1, MSFH-8, MSFH- 17, KBSH-1, Jwala, Pac-36 and Morden. Observations were recorded on leaf nitrogen, leaf area, leaf weight, leaf number, stem nitrogen, stem weight, root length, root weight, stomatal conductance, photosynthesis, total biomass on 30, 45 and 60 days after sowing (DAS) and flower head diameter and flower head weight on 45 and 60 days after sowing in each season. The first two principal components have extracted about 80% of variance in the data of different plant traits on different days after sowing. The consistency of plant traits has been assessed by examining correlations between different plant traits and the distribution of loadings of plant traits on the first two leading principal components 30, 45 and 60 days after sowing. The results have indicated that stem weight and lead number on the 30th day, leaf area and leaf weight on the 45th day and leaf area, leaf weight and total biomass on the 60th day after sowing had significantly higher loadings on the 1st principal component. Similarly, root length on the 30th day, flower head diameter and flower head weight on the 45th day and root length and photosynthesis on the 60th day after sowing had significantly higher loadings on the 2nd principal component. Based on a graphic plot of the loadings, root length (30 and 60 DAS), stomatal conductance (30, 45 and 60 DAS) and photosynthesis (30 DAS) were found to be consistent since their loadings on the 1st principal component had high mean values with low standard deviations. Similarly, stem nitrogen (45 and 60 DAS), stomatal conductance (45 DAS), photosynthesis (30 DAS), leaf nitrogen (60 DAS), root length (30 DAS), flower head diameter (45 DAS) and flower head weight (45 DAS) were also consistent since their loadings on the 2nd principal component had high mean values with low standard deviations. This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. principal component analysis nationallicence plant traits nationallicence loadings of traits nationallicence sunflower genotypes nationallicence dominance for plant growth nationallicence Sankar G.R.Maruthi Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut Vanaja M. Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut Maruthi V. Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut Reddy P. Raghuram Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut Murthy D. Narasimha Department of Mathematics, Jawaharlal Nehru Technology University, Hyderabad - 500 028, Andhra Pradesh, India aut HELIA De Gruyter 27/41(2004-12-01), 113-122 1018-1806 27:41<113 2004 27 helia https://doi.org/10.2298/hel0441113m text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.2298/hel0441113m text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sankar G.R.Maruthi Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut NATIONALLICENCE 700 1- Vanaja M. Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut NATIONALLICENCE 700 1- Maruthi V. Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut NATIONALLICENCE 700 1- Reddy P. Raghuram Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad - 500 059, Andhra Pradesh, India aut NATIONALLICENCE 700 1- Murthy D. Narasimha Department of Mathematics, Jawaharlal Nehru Technology University, Hyderabad - 500 028, Andhra Pradesh, India aut NATIONALLICENCE 773 0- HELIA De Gruyter 27/41(2004-12-01), 113-122 1018-1806 27:41<113 2004 27 helia CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter